American Journal of Applied Mathematics

Archive

Volume 11, Issue 2, April 2023

  • Multi-Objective Optimization Model for Thermal-Mechanical Treatment of Recycled Concrete Aggregate

    Nam-Il Kim, Un-song Pak, Kyong-Chol Kim

    Issue: Volume 11, Issue 2, April 2023
    Pages: 17-22
    Received: 7 April 2023
    Accepted: 15 May 2023
    Published: 5 June 2023
    DOI: 10.11648/j.ajam.20231102.11
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    Abstract: Efficient use of recycled concrete aggregates (RCA) produced using construction and demolition (C&D) waste can help solve many of the problems, such as reducing the consumption of huge amounts of natural aggregate and the generation of construction waste. Thermal-mechanical treatment is becoming a convenient method for recycling old concrete, but r... Show More
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  • Optimal Control of COVID-19: Examining the Incidence of Contamination and Its Recurrence in Nigeria

    Emmanuel Nwaeze, Sunday Nwokpoku Aloke, Louis Omenyi, Michael Uchenna

    Issue: Volume 11, Issue 2, April 2023
    Pages: 23-31
    Received: 13 April 2023
    Accepted: 27 April 2023
    Published: 5 June 2023
    DOI: 10.11648/j.ajam.20231102.12
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    Abstract: COVID-19 is an epidemic virus infection that is ravaging the world today. There are no pre-existing immunity and People were easily infected by this virus known as severe acute respiratory syndrome coronavirus (SARS-CoV-2) which caused Covid-19 (CDC, 2020). According to available data, the COVID-19 virus transmits most easily amongst people who are... Show More
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